canet



(No Model.) 4 Sheets-Sheet 1.

J. B G. A; OANET. nREEGH MECHANISM FOR ORDNANGE.

' No. 502,172. Patented July 25,1893. v

4 x E I I Q% f ugf 4 Sheets Sheet 2.

(No Model.)

ANET.

ISM FOR ORDNANGE.

Patented July 25, 1893.

Y J. B. G.

BREEGH MEGHAN No. 502,172.

FIG.2.

Whey/Jar fiz eiziwr Patented July 25,1893.

J. B. G. A. CANE? (No Model.)

' J. B. G. A. OANET.

BREEGH MECHANISM FOR ORDNANGE.

No. 502,172. Patented July 25, 1893.

4 Sheets-Sheet 4.

LL v ITED STATES PATENT ICEQ JEAN BAPTISTE GUSTAVE ADOLPI'IE (JANET, OF PARIS, FRANCE, ASSIGNOR OF ONE-HALF TO THE SIR JOSEPH WVHITYVORTH & COMPANY, LIMITED, OF OPENSl-IAl/V, MANCHESTER, ENGLAND.

BREECH MECHANISM FOR ORDNAN CE.

SPECIFICATION forming part of Letters Patent No. 502,172, dated July 25, 1893.

Application filed December 6, 1892. Serial No. 454,278. (No model.)

To 11% whom it may concern.- breech screw together as soon as the latter is Be it known that I, JEAN BAPTIsTE GUS- out of the breech. 'In Fig. 4 this catch bolt TAVE ADOLPHE GANET, engineer, a citizen of is shown in the position wherein itlocks the the Republic of France, and a resident of carrier ring to the end plate of the gun.

Paris, France, haveinvented certain new and E is a shaft provided with a hand-lever E d'seful Improvements. in Breech Mechanism. for operating the breech mechanism. ll Fig. for Ordnance; of which the following is a 5 is an endless screw or worm keyed on the specification, reference being had to the acsaid shaft. F is a worm wheel fitted to turn companying drawings. freely on the vertical shaft F and driven by My invention relates to breech mechanism the said worm. The shaft F forms the pivot 60 and is designed to provide mechanism for faon which the carrier ring is turned to and cilitating the opening and closing of the away from the breech. F is a pinion with.

breech of heavy guns. helical teeth cast or otherwise formed solidly The said invention consists in various comor in one piece with the said worm wheel. I 5 binations of parts adapted to produce success- G is a pinion with helical teeth geared with 65 ively all of the movements necessary for the the pinion F opening or the closing of the breech of a gun H. is an endless screw with multiple threads by the continuous movement of a lever or geared with the pinion G and having its axis handle in one or the other direction. parallel to that of the said pinion. This end- The said invention is illustrated in the acless screw is supported at its ends in suitable 7o companying drawings, in whichbearings in the'carrier bracket D as clearly Figure 1 is a rear end view of a gun proshown at D D Fig. 3. vided with my improved breech-mechanism. B is a toothed sector with inclined teeth Fig.2isasimilar view showing portions of the formed or fixed on the breech-screw B and z 5 mechanism in transverse section. Fig.- 3 is a geared with the endless screw 11. The teeth 7 longitudinal central section. Fig. 4 is a horiof the gear wheels F, G, and of the endless zontal section taken on two different planes screw and sector are inclined at an angle of the right half being taken on the line :0, cc forty-five (45) degrees. The axes of the pin- Fig. 1, and the left half being taken on the ion wheels and screws are arranged to bear 0 line y, 1 Fig. 1. Fig. 5 is a sectional plan on steel or other hard metal dies to minimize So taken on the line 5,- 2 Fig. 1. the friction. Like letters indicate the same parts th roughl-Vith my improved mechanism the continuout the drawings. ous turning of the actuating handle E in one A is a portion of the body of the gun. direction first releases the breeclrplug from r B is the breech-plug or screw. the screw threads of the gun, secondly with- 85 C is a metal end plate or bracket attached draws the said breech-plug from the breech to the breech end of the gun and properly onto the carrier bracket, and thirdly turns constructed for supporting the breech-mechthe same about the pivot of the carrier-away anism. D is the carrier-ringhinged to the said from the breech; and the continuous turning 0 end plate at the side of the breech in the of the said handle in the opposite direction 90 usual manner. closes the breech; that is to sayz-In opening 1) is a bracket formed with and projecting the breech the handle E being turned in the rearwardly from the carrier ring and serving proper direction, first acts through the shaft to support the breech-plug when'the same is E the worm E the helical pinions F and G,

withdrawn from the breech. It also carries the endless screw ll, and sector 1;, to turn 5 the withdrawing mechanism. B is the orthe breech screw 15 about its axis to release dinarycatch or looking bolt for locking in a the threads of the same from those in the well known manner the said carrier-ring to gun. Then withoutinterruptionof thomovcthe end platewhen the breech piugisin place, ment of the lever handle and shaft 1!. the

and also for locking the said carrier-ring and turning of the breech-plug about its axis is Ice arrested bya stop 11 arranged to limit its rotation, but the screw or worm H continuing to turn about its axis and being prevented from moving endwise, its teeth act like screwthreads on those of the sector B, that is to say, the said endless screw and sector act as a screw and nut and thereby the breech ,plng B is drawn out of the breech. Then the breech plug having been drawn back till it abuts against the rear end of the carrier bracket D and into a position which permits the locking bolt B to retire from engagement with the plate C the carrier ring and bracket are free to turn upon the hinge or pivot at the side of the breech. As at this moment the rotation of the endless screw H is stopped by reason of the abutment of the breech-plug against the bracket D, and the said screw becomes so to speak solid with the bracket, the continued rotation of the handle acting through the helicoidal gearing to thrust the endless screw H backward causes the carrier and the breechscrew to turn about the shaft F away't'rorn "the breech. The closing of the breech is effected by turning the handle in the opposite direction, that is to say, by continuously turning the said handle in the proper direction to reproduce the above described movements in the reverse order.

Tihat I claim is 1. in abreech-loading gun, the combination with the breechscrew, of the toothed sector B, the endless screw or worm H having its axis parallel with that of the gun, and gearing with the sector B, a crank-shaft E, and the helical wheels F G, worm wheel F, and worm E for gearing the worm H with the said operating crank shaft, substantially as and for the purpose specified.

2. The combination of the breech-screw, the carrierring hinged or pivoted to one side of the breech and through which the breechscrew can slide, the bracket D on the carrier-ringforsupporting the breech-screw when the latter is withdrawn from the breech, the toothed sector B, the endless screw or worm H, gearing with the said sector B, and supported in bearings in the bracket D with-its axis parallel to that of the gun, the crank shaft E, geared with the worm H, through a worm wheel F, and helical wheels F G, the end of the bracket D being constructed ,to form a stop to limit the sliding movement ot' the breech-screw, for the purpose specified.

In witness whereof I have hereunto set my hand this 10th day of November, 1892.

JEAN BAPTISTE GUSTAVE ADOLPHE CANET.

Witnesses:

Rom. M. Hoornn, J. QEATEL,

substantially as described 

